Device for putting on belts.



NIJ. 634,9l5. Patented Oct. l7, I899. R. SCHOFIELD.

DEVICE FOR PUTTING 0N BELTS.

(Application filed Feb. 10, 1899.)

(No Model.) 2 Sheats-Sheet I.

No. 634,9l5. Patented Oct. l7, I899. R. SCHOFIELD.

DEVICE FOR PUTTING on BELTS.

(Application filed I'eb. 10, 1899.)

(No Model.) 2 Sheets8heat 2.

J A S mt Nonnm PEKERS co, Phomuma. wlmmuo'ron, n. a

lltirrnn Smarts arnur FFlQhb ROBERT SCHOFIELD, OF NEV BEDFORD, MASSACHUSETTS.

DEVICE FOR PUTTING ON BELTS.

SPECIFICATION forming part of Letters Patent No. 634,91 5, dated October 17, 1899.

Application filed February 10, 1899. belial No, 705,157. (No model.)

(Ml whom it may concern.-

Be it known that 1, ROBERT SCHOFIELD, a subject of the Queen of Great Britain, residing at New Bedford, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Devices for Putting on Belts; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Heretofore various devices have been employed for putting on and throwing olf belts,

but such devices have been open to the objections that they were expensive or cumbersome, or both, or so complicated and expensive in their nature as to preclude their general use for putting on and throwing off the belts of line-shafts.

My invention relates to an improved device for putting on belts, and is partieularlyadapted for line-shaft pulleys or the like, onto which it is frequently necessary to put belts while the shaft is in rapid motion, and entirely removing all danger to life or limb of the persons employed for the purpose.

My invention consists in the device for putting on belts hereinafter described, and more particularly defined in the claims.

In the drawings illustrating the preferred form of my invention, in which like reference characters refer to like parts throughout, Figure 1 is a front elevation of the line-shaft and pulley having my improved device applied thereto. Fig. 2 is an end elevation looking from the right-hand end of Fig. 1. Fig.

, 3 is a plan view of the device, showing also the counter-shaft driven from the line-shaft.

A indicates the power-shaft-such, for instance, as the line-shaft of a mill-room.

B indicates a pulley fast thereon.

E represents a counter-shaft to be driven by means of the belt 1), running from the pulley B to the pulley F on the counter-shaft.

My invention contemplates the em ployment of a hook 1, adapted to be hooked over the belt D, desired to be applied to the rapidlyrotating pulley B, and means for moving the hook in the direction of movement of the surface of said pulley, so that the belt will be drawn onto it. Any suitable means may be employed for this purpose; but I prefer to em ploy a flexible tension member, such as a chain or the like, attached to the hook 1 and mounted in such a way that a pull in the proper direction on the chain will cause the hook engaging the belt to be raised along the surface of the pulley in the direction of move ment of the surface of the same, so as to lift the belt onto it.

The preferred means for moving the hook in the above-described manner is illustrated in the accompanying drawings and consists of a chain designated in a general way by the reference-letter 0, one part of which, as 2, is secured to a suitable support at one side of the pulley and at such distance therefrom that when the hook is moved upward it will permit the hook to travel ina path corresponding substantially to the surface of the pulley. The part 2 of the chain may be attached to any suitable support at one side of the pulley, and is shown as attached by means of a hook 3, secured to its end "and hooked into an eyebolt 4', screwed into a support, which is shown as the shaft-hanger 5; or it will be understood that it might be attached to the ceiling 6 at a pointdetermined by projecting the line of direction of the chain upward until it intersects the ceiling; but my invention is not restricted to attaching the end of the chain to any particular device. The hook 1 is secured to the chain in any suitable manner, so that it cannot approach nearer the support than a certain given distanee. To this end I prefer to pass the chain loosely through the eye of the hook, so that the latter may slide freely upon the former, and in such case in orderto prevent the hook from sliding nearer to the point of support than a given distance I provide the chain with a stop 7, adjustably secured thereto, so that its distance from the point of support may be changed to suit varying conditions.

While the device above described consti' tutes a complete and operative device for putting belts on pulleys, as will appear more fully hereinafter, I prefer to employ in connection therewith a guide to control the direction of the pull to be exerted upon the free end of the chain to move the hook in the direction of movement of the surface of the pulley. This guide may be made in any de sired manner and located in any desired poby the arrow 11; but my inventionis not limited to a device adapted to put a belt on a pulley running in this direction, as it is obvious that by simply changing the location of the support and omitting or changing the 10- cation of the guide the device is equally adapted for use in connection with the application of a belt runningin the opposite direction.

The operation of my device is as follows: One part of the chain is secured to asuitable support atone side of the pulley to which the belt is to be applied, and the hook is hooked over the belt, and the free end of the chain is pulled upon in a direction to move the hook in the direction of movement of the surface of the pulley. This statement of the operation of my device for putting on belts will be observed to be definitive of a structure appli cable alike to a pulley runningin the direction of the arrow 11 or in the opposite direction. Referring particularly to the illustrated embodiment of my invention, the hook 9 on the chain is hooked into the eyebolt l0, and the hook 3 of the end 2 of the chain is hooked into the eyebolt 4, arranged on a suitable support therefor, and then the hook 1 is hooked over the under side of the belt in the manner shown. By pulling upon the free end 12 of the chain the hook 1 will bring the belt to the face of the pulley and the parts of the device will assume the position shown in Fig. 1. Then a further pull on the free end 12 of the chain 1 will cause the hook to travel upward along the surface of the pulley B and the belt D will be lifted onto it. The adjustable stop 7 will engage the hook when the hook is caused to slide on the chain by pulling on the free end thereof, the said stop preventing the hook from moving too far in the direction of the end 2 of the chain, which would resultin carrying the belt over onto the other side of the pulley, so that after the hook 1 has engaged the stop 7 a further pull on the free end12 of the chain will cause the hook 1 to move upward along the surface of the pulley and in the direction of movement of the same. Then the belt is carried completely onto the pulley, the vibrations thereof will disengage the hook therefrom, and it will be carried away from the belt by the weight of the free end 12 of the chain. This method of applying a belt to a rapidly-moving pulley entirely precludes danger to the life or limb of the person employed to put on the belt.

It is to be understood that it is within the purview of my invention to employ any device which will apply a belt to a rapidly-moving pulley in substantially the manner hereinbefore described, and it is equallya matter of indifference, sofar as the invention is concerned, whether the pulley be rotating in one or the other direction, as it is obvious that it might be employed in the application of belts to pulleys running in the opposite direction by merely changing the position of the support for the end of the chain.

Having thus described my invention, I claim as broadly novel and desire to secure by Letters Patent of the United Statesv 1. A device for putting on belts, comprising a chain, a suitable support located on one side of the pulley to which the chain is secured, a hook on said chain adapted to be hooked over the belt, whereby when the free end of the chain is pulled upon in a direction to move said hook in the direction of movement of the surface of said pulley, said belt will be drawn onto the same, substantially as described.

2. A device for putting on belts, comprising a chain, a suitable support located on one side of the pulley to which the chain is secured, a hook freely movable on said chain adapted to be hooked over the belt, and a stop adjustably secured to said chain adapted to limit the movement of said hook on said chain in the direction of said support, whereby when the free end of said chain is pulled upon in a direction to move said hook in the direction of movement of the surface of said pulley, said belt will be drawn onto the same, substantially as described.

3. A device for putting on belts, comprising a chain, a suitable support, located on one side of the pulley to which the chain is se cured, a hook on said chain adapted to be hooked over the belt, and a chain-guide on the same side of said pulley as said support but nearer said pulley, through Which the free end of said chain may be pulled to draw the belt onto said pulley, substantially as described.

4:. A device for putting on belts, comprising a chain, a suitable support, located on one side of the pulley to which the chain is secured, a hook freely movable on said chain adapted to be hooked over the belt, a stop adjustably secured to said chain adapted to limit the movement of said hook on said chain in the direction of said support, and a chainguide on the same side of the pulley as said support but nearer to said pulley, through which the free end of said chain may be pulled to draw said belt onto said pulley, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

ROBERT SGHOFIELD.

Witnesses:

JOSEPH BENTLEY, FRANK BUcKLEY. 

